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Stator winding of permanent magnet brushless coreless motor

A stator winding, permanent magnet brushless technology, applied to the shape/style/structure of windings, electric components, winding conductors, etc., can solve the problems of unsatisfactory commutation performance, slow response speed, large moment of inertia, etc., and achieve enhanced The effect of magnetic energy utilization, air gap reduction, cogging torque elimination and iron loss elimination

Inactive Publication Date: 2014-12-17
LUOYANG KAIXIN ELECTROMECHANICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional permanent magnet DC motor uses silicon steel sheet as the stator core, which has a large axial dimension, cogging torque and stator iron loss, large moment of inertia, slow response speed, and unsatisfactory commutation performance

Method used

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  • Stator winding of permanent magnet brushless coreless motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Such as figure 1 As shown, a stator winding of a permanent magnet brushless iron core motor, the stator winding is superimposed and connected by the first layer of single-phase winding disk 2, the second layer of single-phase winding disk 3 and the third layer of single-phase winding disk 4 Composition, and the three-layer single-phase winding disk adopts the star connection method.

[0014] Any two layers of single-phase winding disks of the three-layer single-phase winding disks are different from each other by a certain angle in the counterclockwise direction.

[0015] The first layer of single-phase winding disk 2, the second layer of single-phase winding disk 3 and the third layer of single-phase winding disk 4 are all welded by a number of coils 1 according to the full-pitch winding. The coils are fan-shaped or can be Square, trapezoidal or other geometric shapes.

[0016] In addition, it should be noted that the stator winding is a planar winding without an iro...

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Abstract

The invention discloses a stator winding of a permanent magnet brushless coreless motor. The stator winding is formed by stacking and connecting a first-layer single-phase winding disc, a second-layer single-phase winding disc and a third-layer single-phase winding disc; the single-phase winding discs are connected in a star form. The stator winding is in the chain-connected triple-layer stacked design, a sector coil is adopted so that length of an effective side of the stator winding is increased, air space is lessened, utilization rate of magnetic energy is increased, and electromagnetic torque of the motor is increased; in addition, the stator winding is in a coreless plane structure, cogging torque and iron loss are eliminated, axial size of the motor is decreased, stator weight is decreased, and power intensity of the motor is increased.

Description

technical field [0001] The invention belongs to the technical field of permanent-magnet brushless iron-core motors, in particular to a stator winding of a permanent-magnet brushless iron-core motor. Background technique [0002] The traditional permanent magnet DC motor uses silicon steel sheet as the stator core, which has a large axial dimension, cogging torque and stator iron loss, large moment of inertia, slow response speed, and unsatisfactory commutation performance. The motor made of this kind of winding disk adopts axial magnetic field, which greatly improves the power density and torque volume ratio; it adopts new winding technology and high-voltage precision die-casting molding technology of polymer composite materials, which effectively reduces the copper loss of winding; The use of silicon steel sheet as the material of the fixed iron core reduces the magnetic damping, reduces the driving power, and reduces the heat source of iron loss. It has the advantages of ...

Claims

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Application Information

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IPC IPC(8): H02K3/28H02K3/47
Inventor 郭栋梁孙伟华屈庆贺李亚磊
Owner LUOYANG KAIXIN ELECTROMECHANICAL SCI